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Chemistry

Chemistry
The percentage of Nitrogen in Air is

85.02
0.94
0.03
78.03

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Chemistry
Aluminium salt commonly used to stop bleeding is

Potash alum
Aluminium Chloride
Aluminium nitrate
Aluminium sulphate

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Chemistry
Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps ?

Neon
Nitrogen
Sodium
Hydrogen

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Chemistry
Which metal is extracted from sea water?

Magnesium
Potassium
Aluminium
Beryllium

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Chemistry
Chemical formula of washing soda is

NaHCO3
Na2SO4.10H2O
Ca(OH)2
Na2CO3.10H2O

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Chemistry
Smoke is formed due to

Gas dispresed in solid
Gas dispersed in gas
Solid dispersed in gas
Solid dispresed in liquid

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